stop a timer through a PPI task

[Omnia]

Hello,

 am using the NRF52-DK softdevice 6.0.0 and NRF SDK 15.0.

I am working with PPI, GPIOTE and 2 timers (called timer1 and timer2) on nrf52832

Through the COMPARE[0] event of a timer2 , I would like to stop the timer1 then Through the COMPARE[1] event of a timer2 , I would like to restart the timer1 with the use of the PPI.

Below my code for the stop parts only:

    // Allocate the PPI channel 
    err_code = nrfx_ppi_channel_alloc(&ppi_channel2);
    APP_ERROR_CHECK(err_code);
    
    // Assigning task and event endpoints so that the PPI channel will shut down timer1 on timer2 COMPARE[0] match.
    err_code = nrfx_ppi_channel_assign(ppi_channel2,
                                          nrfx_timer_event_address_get(&timer2, NRF_TIMER_EVENT_COMPARE0),
                                          ????);
    APP_ERROR_CHECK(err_code);
      
    // Enable the PPI channel 
    err_code = nrfx_ppi_channel_enable(ppi_channel2);
    APP_ERROR_CHECK(err_code);

I do not know can I achieve that and what I have to write instead of the ???? 

Thanks for your help.

[Sylvain]

Hi Omnia,

You should try the following way:

// Assigning task and event endpoints so that the PPI channel will shut down timer1 on timer2 COMPARE[0] match.
    err_code = nrfx_ppi_channel_assign(ppi_channel2,
                                          nrfx_timer_event_address_get(&timer2, NRF_TIMER_EVENT_COMPARE0),
                                          nrf_drv_timer_task_address_get(&timer1, NRF_TIMER_TASK_STOP));
    APP_ERROR_CHECK(err_code);

Don't forget to declare the timer1 instance.

Kind regards,
Sylvain

[Omnia]

Hi Sylvain,

I thought having tried this method at the first read but it appears I made a too quick shortcut between the new nrfX API and the previous nrf one.

Indeed : nrfx_timer_task_address_get is the new nrf_drv_timer_task_address_get method

BUT nrf_timer_task_address_get does not seems to be equivalent to nrfx_timer_task_address_get.

My fault, Thanks to you for pointing out my mistake.